Features: Elevates air quality and efficiency in space with powerful 58m/h Inlines Pipe Fan, for Smokes extraction and ventilation.Featuring all metal body with reinforced paint, this duct fan operates quietly while providing strong suction and energy saving performances with metal wind.for homeowners and professional, this Extractors fan to those who demand clean environment in areas such as kitchens and workshops.in application, the fan for use in restaurants, internet cafe, cinemas, and other commercial spaces requiring effective air circulation and Smokes removal.Installation with 20mm 25mm 32mm 40mm 46mm hole size requirement; enjoy a fresher atmosphere with this kitchen tool that double as essential component for well ventilated.Specifications: Input: DC12V2ASpeed: 16700RPMAirflow: 58m/hStyle: 20mm, 25mm, 32mm, 40mm, 46mm(optional)Package Includes: 1Set Extractors Fannote: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid.Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!